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Best Feature Flags Tools

Explore leading tools in the Feature Flags category, including open-source options and SaaS products. Compare features, use cases, and find the best fit for your workflow.

10+ open-source projects · 5 SaaS products

Explore open-source projectsCompare SaaS products

Top open-source Feature Flags

These projects are active, self-hostable choices for knowledge management teams evaluating alternatives to SaaS tools.

View all 10+ open-source options
Unleash logo

Unleash

Feature flag platform enabling safe, incremental releases

Feature Flags
Stars
12,925
License
Apache-2.0
Last commit
3 days ago
TypeScriptActive
GrowthBook logo

GrowthBook

Open Source Feature Flagging and A/B Testing Platform

Feature Flags
Stars
7,141
License
Unknown
Last commit
3 days ago
TypeScriptActive
Flagsmith logo

Flagsmith

Open-Source Feature Flagging and Remote Config Platform

Feature Flags
Stars
6,076
License
BSD-3-Clause
Last commit
3 days ago
PythonActive
Flagger logo

Flagger

Progressive delivery automation for Kubernetes with canary deployments

Feature Flags
Stars
5,213
License
Apache-2.0
Last commit
11 days ago
GoActive
Flipt logo

Flipt

Git-native feature management platform for modern development teams

Feature Flags
Stars
4,644
License
Unknown
Last commit
3 days ago
GoActive
Flipper logo

Flipper

Beautiful, performant feature flags for Ruby and Rails

Feature Flags
Stars
3,887
License
MIT
Last commit
11 days ago
RubyActive
Most starred project
Unleash
12,925★

Feature flag platform enabling safe, incremental releases

Recently updated
Unleash
3 days ago

Unleash lets teams control feature rollouts, run canary releases, and test in production with an API‑first system and 15+ official SDKs, all self‑hostable via Docker.

Dominant language
Go • 5 projects

Expect a strong Go presence among maintained projects.

Popular SaaS Platforms to Replace

Understand the commercial incumbents teams migrate from and how many open-source alternatives exist for each product.

Hypertune logo

Hypertune

Type-safe feature flags platform with A/B testing, analytics, and app configuration optimized for TypeScript

Feature Flags
Alternatives tracked
16 alternatives
LaunchDarkly logo

LaunchDarkly

Feature flag management platform for safe software releases with targeting, experimentation, and rollback capabilities

Feature Flags
Alternatives tracked
16 alternatives
Reflag logo

Reflag

Feature flags and A/B testing for TypeScript

Feature Flags
Alternatives tracked
16 alternatives
Statsig logo

Statsig

Feature experimentation and analytics platform

Feature Flags
Alternatives tracked
16 alternatives
Tggl logo

Tggl

Feature flag and release management platform for agile teams

Feature Flags
Alternatives tracked
16 alternatives
Most compared product
Hypertune
10+ open-source alternatives

Hypertune offers type-safe feature flags with local evaluation, Git-based version control, A/B testing, and AI optimization. Optimized for TypeScript, React, and Next.js applications.

Leading hosted platforms
Hypertune, LaunchDarkly, Reflag

Frequently replaced when teams want private deployments and lower TCO.

Explore related categories

Browse neighbouring categories in DevOps & Platform to widen your evaluation.